diff --git a/dev/styles.css b/dev/styles.css
index ede4731deec..bc319241c60 100644
--- a/dev/styles.css
+++ b/dev/styles.css
@@ -277,7 +277,7 @@ var > var::after {
 
 .note {
   padding: 3px;
-  background-color: #eee;
+  background-color: #f7f7f7;
 }
 
 .note pre {
@@ -302,7 +302,7 @@ var > var::after {
 
 .css::before {
   content: "CSS:";
-  color: #888888;
+  color: #757575;
   font-size: 1em;
   display: block;
   background: transparent;
@@ -438,7 +438,7 @@ ol.toc li {
 }
 
 ol.toc .secno {
-  color: #888888;
+  color: #757575;
 }
 
 html.index ol.toc li {